Glucose Deprivation Contributes to the Development of KRAS Pathway Mutations in Tumor Cells

By Jihye Yun, C. Rago, I. Cheong, R. Pagliarini, P. Angenendt, H. Rajagopalan, Kerstin Schmidt, James K. V. Wilson, S. Markowitz, Shibin Zhou and 6 more. Science, 2009

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Desperately Seeking Glucose Mutations in oncogenes and tumor suppressor genes allow cancer cells to outgrow their neighboring healthy cells. What microenvironmental conditions provide a selective growth advantage to these cells? Yun et al. (p. 1555, published online 6 August) identify low glucose availability as a microenvironmental factor driving the acquisition of KRAS oncogenic mutations that allow cancer cells to survive and grow. In genetically matched colorectal cancer cells that differed only in the mutational status of the KRAS oncogene, mutant cells selectively overexpressed glucose transporter-1 and exhibited enhanced glucose uptake and glycolysis. When cells with wild-type KRAS were placed in a low-glucose environment, very few cells survived but most of the survivors expressed high levels of glucose transporter-1, and a small percentage of the survivors had acquired new KRAS mutations. Thus, glucose deprivation may help to drive the acquisition of cell growth–promoting oncogenic mutations during tumor development. Glucose deprivation can drive the acquisition of certain oncogenic mutations in human cancer cells. Tumor progression is driven by genetic mutations, but little is known about the environmental conditions that select for these mutations. Studying the transcriptomes of paired colorectal cancer cell lines that differed only in the mutational status of their KRAS or BRAF genes, we found that GLUT1, encoding glucose transporter-1, was one of three genes consistently up-regulated in cells with KRAS or BRAF mutations. The mutant cells exhibited enhanced glucose uptake and glycolysis and survived in low-glucose conditions, phenotypes that all required GLUT1 expression. In contrast, when cells with wild-type KRAS alleles were subjected to a low-glucose environment, very few cells survived. Most surviving cells expressed high levels of GLUT1, and 4% of these survivors had acquired KRAS mutations not present in their parents. The glycolysis inhibitor 3-bromopyruvate preferentially suppressed the growth of cells with KRAS or BRAF mutations. Together, these data suggest that glucose deprivation can drive the acquisition of KRAS pathway mutations in human tumors.

Subfields: Cancer Research, Molecular Biology, Oncology

View Paper: https://www.semanticscholar.org/paper/bbca8eeafe8c96382b0288e0cd863d1fd61f802f

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In Cancer Research

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In Molecular Biology

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  6. Lewis C. Cantley
  7. Patrick S. Ward
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In Oncology

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